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Preparation method of aerogel composite material for degrading organic matters

A composite material and aerogel technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as unfavorable recycling and poor adsorption of dye wastewater treatment agents , achieve good environmental compatibility, facilitate large-scale production, and improve efficiency

Inactive Publication Date: 2019-01-15
潘钕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dye wastewater treatment agent prepared by this method has poor adsorption and is not conducive to recovery and recycling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing an airgel composite material for degrading organic matter, comprising carbon nitride preparation, titanium dioxide-carbon nitride composite, cellulose modification and airgel preparation, the specific steps are as follows:

[0022] (1) Preparation of carbon nitride: Take 10 g of guanidine hydrochloride and put it into a crucible, calcinate it in a muffle furnace at 500 °C for 2 h, the heating rate is 3 °C / min, cool it to room temperature naturally, grind it to powder for later use; use the bubble template method to heat The preparation of carbon nitride by polymerization has the advantages of simplicity and environmental protection, and by adjusting the thermal polymerization temperature, mesoporous carbon nitride with different specific surface areas can be prepared to realize the adjustability of the process; mesoporous carbon nitride not only exhibits excellent surface transmission The mass diffusion process can also optimize the mesoporous ener...

Embodiment 2

[0028] A method for preparing an airgel composite material for degrading organic matter, comprising carbon nitride preparation, titanium dioxide-carbon nitride composite, cellulose modification and airgel preparation, the specific steps are as follows:

[0029] (1) Preparation of carbon nitride: Take 10 g of guanidine hydrochloride and put it into a crucible, calcinate in a muffle furnace at 600 °C for 3 h, the heating rate is 4 °C / min, cool naturally to room temperature, grind to powder for later use; use the bubble template method to heat The preparation of carbon nitride by polymerization has the advantages of simplicity and environmental protection, and by adjusting the thermal polymerization temperature, mesoporous carbon nitride with different specific surface areas can be prepared to realize the adjustability of the process; mesoporous carbon nitride not only exhibits excellent surface transmission The mass diffusion process can also optimize the mesoporous energy band s...

Embodiment 3

[0034] A method for preparing an airgel composite material for degrading organic matter, comprising carbon nitride preparation, titanium dioxide-carbon nitride composite, cellulose modification and airgel preparation, the specific steps are as follows:

[0035] (1) Preparation of carbon nitride: Take 10 g of guanidine hydrochloride and put it into a crucible, calcinate in a muffle furnace at 650 °C for 3 h, the heating rate is 5 °C / min, cool to room temperature naturally, and grind to powder for later use; use bubble template method to heat The preparation of carbon nitride by polymerization has the advantages of simplicity and environmental protection, and by adjusting the thermal polymerization temperature, mesoporous carbon nitride with different specific surface areas can be prepared to realize the adjustability of the process; mesoporous carbon nitride not only exhibits excellent surface transmission The mass diffusion process can also optimize the mesoporous energy band s...

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Abstract

The invention discloses a preparation method of an aerogel composite material for degrading organic matters. The preparation method comprises carbon nitride preparation, titanium dioxide and carbon nitride compounding, cellulose modification and aerogel preparation, wherein the cellulose modification step is as follows: adjusting the pH of a H2O2 solution to 11-12 by using a NaOH solution, drying,crushing, adding sieved natural saw dust into the H2O2 solution, carrying out constant-temperature oscillation reaction for 10-15 hours, adding 3-alpha-furylacrylic acid accounting for 1-5% of the mass of the saw dust and 3-chloro-2-hydroxypropyl trimethyl ammonium chloride accounting for 0.5-1% of the mass of the saw dust, and reacting for 4-6 hours under ultraviolet light to obtain a modified saw dust cellulose solution. The preparation process is simple, raw material sources are rich, the large-scale production is facilitated, and the prepared aerogel composite material has a large specific surface area, and has the advantages of being high in adsorption property, high in organic substance degradation efficiency, long in service life, green and environment-friendly and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for preparing an airgel composite material that degrades organic matter. technical background [0002] Cellulose is the most abundant and renewable natural polymer compound in nature. It has the advantages of being cheap, degradable, and environmentally friendly. keys are connected. The results of aggregated structure studies show that cellulose is composed of crystalline structure and amorphous structure, and there is no clear boundary between the two. In the cellulose molecular chain, there are 3 hydroxyl groups on each glucose group, that is, 2 secondary alcohol hydroxyl groups (C 2 —OH and C 3 —OH) and a primary hydroxyl group (C 6 —OH), these hydroxyl groups can undergo reactions such as esterification, etherification and graft copolymerization to generate various cellulose derivatives. Cellulose-based adsorbent materials are modified cellulose materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30B01J31/38B01J35/00C02F1/28C02F1/30C02F101/30C02F103/30
CPCB01J20/02B01J20/06B01J20/24C02F1/281C02F1/286C02F1/288C02F1/30B01J20/28047B01J31/38C02F2305/10C02F2103/30C02F2101/30B01J35/23B01J35/39
Inventor 潘钕
Owner 潘钕
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